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Date:      Sat, 13 Jan 2024 18:11:18 +0100 (GMT+01:00)
From:      Alexander Burke <alex@alexburke.ca>
To:        Lev Serebryakov <lev@FreeBSD.org>
Cc:        freebsd-fs <freebsd-fs@freebsd.org>, freebsd-stable <freebsd-stable@freebsd.org>, Warner Losh <imp@bsdimp.com>, Dimitry Andric <dim@FreeBSD.org>
Subject:   Re: vfs.zfs.compressed_arc_enabled=0 is INCOMPATIBLE with L2ARC at least in FreeBSD 13 (Was: Crash on adding L2ARC to raidz1 pool)
Message-ID:  <f20767e9-952c-45c3-81d7-96a5741b6cac@alexburke.ca>
In-Reply-To: <aabed885-79ed-4a2d-9304-c56282f2f631@FreeBSD.org>
References:  <22167ed4-887d-4fe0-b0a6-36312ae38fea@FreeBSD.org> <aabed885-79ed-4a2d-9304-c56282f2f631@FreeBSD.org>

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Hello,

It looks like the issue is fixed in OpenZFS 2.2 (and thus in FreeBSD 14-REL=
EASE):

https://github.com/openzfs/zfs/issues/15764#issuecomment-1890491789

Cheers,
Alex
----------------------------------------

Jan 13, 2024 12:26:50 Lev Serebryakov <lev@FreeBSD.org>:

> On 08.01.2024 18:34, Lev Serebryakov wrote:
>=20
> =C2=A0=C2=A0 I've found that all my L2ARC problems (live-locks and crashe=
s) are result of OpenZFS bug which can not support L2ARC with un-compressed=
 ARC (vfs.zfs.compressed_arc_enabled=3D0).
>=20
> =C2=A0=C2=A0 It is NOT hardware-depended (and my NVMe is perfectly Ok and=
 healthy) and could be easily reproduced under VM with all-virtual disks.
>=20
> =C2=A0=C2=A0 I've opened the ticket in OpenZFS project (https://github.co=
m/openzfs/zfs/issues/15764).
>=20
> =C2=A0=C2=A0 Maybe, FreeBSD need ERRATA entry?
>=20
>=20
> =C2=A0=C2=A0 Previous threads:
>=20
> =C2=A0=C2=A0=C2=A0 [1] ZFS pool hangs (live-locks?) after adding L2ARC
> =C2=A0=C2=A0=C2=A0 [2] Crash on adding L2ARC to raidz1 pool
>=20
> --=20
> // Lev Serebryakov



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